Discover the Faithfull Prestige Tri-Scale Engineer Ruler, a must-have tool for engineers and architects who demand precision in their work. This 300mm ruler is expertly crafted from durable black anodised aluminium, ensuring longevity and resistance to corrosion. Featuring 6 distinct, color-coded scales (1:20, 1:25, 1:50, 1:75, 1:100, 1:125), it simplifies the process of converting ratios for accurate drawings and designs. The innovative triangular profile design keeps your fingers safe while cutting or scoring materials, making it ideal for various tasks. Manufactured using advanced CNC technology, this ruler guarantees exceptional accuracy with its laser-engraved scales. Built to meet the highest standards and backed by a 10-year guarantee, the Faithfull Prestige Tri-Scale Engineer Ruler is the perfect addition to your toolkit, combining functionality with durability.